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Home › Gemstones › Untreated Gemstones

Untreated Gemstones

Browse our selection of untreated gemstones featuring natural color, clarity and beauty without enhancements.

Untreated Gemstones Weight
Untreated Gemstones Size
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Untreated Gemstones Treatment

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Bi-color Untreated Gemstones
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Orange Untreated Gemstones
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Yellow Untreated Gemstones
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0.48ct Orange Clinohumite, Round, SI

0.48ct Orange Clinohumite, Round, SI

4.7 mm

$ 23.90

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17.63ct Multicolor Boulder Opal, Fancy, Opaque

17.63ct Multicolor Boulder Opal, Fancy, Opaque

23.8 x 14.9 mm

$ 87.80

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1.69ct Orange Zircon, Pear Shape, VS

1.69ct Orange Zircon, Pear Shape, VS

8.7 x 5.7 mm

$ 37.22

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1.57ct Orange Hessonite Garnet, Oval, VS

1.57ct Orange Hessonite Garnet, Oval, VS

7.9 x 6.4 mm

$ 27.40

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0.88ct Orange Fire Opal, Oval, Transparent

0.88ct Orange Fire Opal, Oval, Transparent

8.8 x 6.3 mm

$ 30.68

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1.17ct Blue Kyanite, Oval, SI

1.17ct Blue Kyanite, Oval, SI

7 x 5 mm (calibrated)

$ 29.13

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13.46ct Violet Amethyst, Round, VVS-VS
Amethyst Product Video (692453)

13.46ct Violet Amethyst, Round, VVS-VS

16 mm (calibrated)

$ 93.84

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1.45ct Green Tourmaline, Emerald Cut, SI

1.45ct Green Tourmaline, Emerald Cut, SI

14.6 x 3.6 mm

$ 34.95

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4.54ct Green Fluorite, Oval, Transparent

4.54ct Green Fluorite, Oval, Transparent

10.4 x 8.4 mm

$ 18.09

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2.41ct Green Peridot, Cushion, VS

2.41ct Green Peridot, Cushion, VS

8.6 x 7 mm

$ 95.51

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14.42ct White Agate, Fancy, Opaque

14.42ct White Agate, Fancy, Opaque

18.1 x 16.3 mm

$ 22.84

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3.24ctw Brown Tourmaline, Oval, VVS-VS

3.24ctw Brown Tourmaline, Oval, VVS-VS

7.3 x 5.3 mm

$ 134.89

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8.05ct Black Tourmaline, Oval, Opaque

8.05ct Black Tourmaline, Oval, Opaque

13 x 11 mm (calibrated)

$ 40.09

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37.31ct Multicolor Amethyst Geode Slice, Fancy, Transparent
Amethyst Geode Slice Product Video (722351)

37.31ct Multicolor Amethyst Geode Slice, Fancy, Transparent

27.4 x 26.9 mm

$ 39.76

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4.36ctw Orange Hessonite Garnet, Emerald Cut, VS

4.36ctw Orange Hessonite Garnet, Emerald Cut, VS

7 x 5 mm (calibrated)

$ 95.53

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1.30ct Yellow Citrine, Round, VVS

1.30ct Yellow Citrine, Round, VVS

7 mm (calibrated)

$ 10.36

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3.75ctw Orange Sunstone, Oval, Translucent

3.75ctw Orange Sunstone, Oval, Translucent

7.1 x 5.3 mm

$ 28.77

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1.69ctw Red Pyrope Garnet, Square, VVS-VS

1.69ctw Red Pyrope Garnet, Square, VVS-VS

5 x 5 mm (calibrated)

$ 12.96

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0.62ct Multicolor Labradorite, Pear Shape, Translucent

0.62ct Multicolor Labradorite, Pear Shape, Translucent

6.3 x 4.2 mm

$ 1.38

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1.70ct Green Tourmaline, Oval, VVS-VS

1.70ct Green Tourmaline, Oval, VVS-VS

7.9 x 6.8 mm

$ 253.98

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4.36ctw Orange Moonstone, Trillion, Translucent

4.36ctw Orange Moonstone, Trillion, Translucent

9.1 x 8 mm

$ 8.68

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2.54ct Multicolor Labradorite, Round, Translucent

2.54ct Multicolor Labradorite, Round, Translucent

8 mm (calibrated)

$ 5.47

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3.34ct Turquoise Fluorite, Oval, Transparent

3.34ct Turquoise Fluorite, Oval, Transparent

9.5 x 7.6 mm

$ 12.55

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6.44ct Yellow Citrine, Briolette, VVS

6.44ct Yellow Citrine, Briolette, VVS

15.2 x 8.5 mm

$ 36.35

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Why Buy Untreated Gemstones from GemSelect?

Natural Untreated Gemstones

Our untreated gemstones are completely natural and have not undergone any enhancement processes. These gems display their original color and clarity as formed in nature, making them highly valued by collectors, jewelers, and gemstone enthusiasts.

Buy Untreated Gemstones Online

At GemSelect you can easily shop untreated gemstones online with confidence. Our inventory includes carefully sourced loose gemstones from around the world, with full transparency regarding treatments and gem origins.

Natural Untreated Loose Gemstones

Why Choose Untreated Gems?

Untreated gems are prized because they remain exactly as nature created them. Without heat or chemical treatments, these stones offer rarity and authenticity that many collectors and jewelry designers prefer.

Unheated Sapphire and Ruby

Some of the most sought-after untreated gemstones include unheated sapphire and ruby. These rare stones retain their natural color and are highly valued due to the absence of heat treatment commonly used to enhance corundum.

Gemstone Authenticity and Transparency

Every gemstone at GemSelect comes with clear treatment disclosure. When purchasing untreated stones, buyers can be confident they are receiving authentic gems that have not been altered by heat or other enhancement methods.

Untreated Gems for Custom Jewelry

Natural untreated gemstones are perfect for custom jewelry pieces. Their unique appearance ensures every ring, pendant, or pair of earrings features a one-of-a-kind gemstone created by nature.

Rare and Collectible Gemstones

Because many gemstones are routinely treated, truly untreated examples can be relatively rare. Collectors often seek untreated stones because they represent the most natural state of a gemstone.

Learn more about gemstone treatments and natural gem formation on our Gemstone Treatment Guide.

FAQs

What are untreated gemstones?

Untreated gemstones are natural gems that have not been enhanced with heat, chemicals, irradiation, or other treatments. They retain their original appearance as formed in nature.

Are untreated gemstones more valuable?

In many cases untreated gemstones are more valuable because they are rarer than treated stones. Natural color without enhancement is highly prized by collectors and investors.

How can I tell if a gemstone is untreated?

Gemstone treatment is typically determined through gemological testing. Reputable sellers like GemSelect clearly disclose whether a stone is untreated or has received any enhancements.

Which gemstones are commonly untreated?

Some gemstones frequently found untreated include garnet, spinel, peridot, and certain sapphires. However, many gem types may be treated depending on their origin and quality.

Are untreated gemstones suitable for jewelry?

Yes, untreated gemstones can be excellent for jewelry depending on their hardness and durability. Popular choices include sapphire, ruby, spinel, and garnet.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

Navigating the site was very easy and the photos of the exact gem you would be purchasing was well done.

Posted By HVeeder in February, 2026
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Overall Rating -> 10 star ratings

Love how easy the site is to use. Really love that the pictures are of actual product.

Posted By LeAnn in January, 2026
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Overall Rating -> 9 star ratings

The website was easy to use and informative of the selection of stones it has. I quickly found the right stone for me.

Posted By Guero in March, 2026
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Overall Rating -> 10 star ratings

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

Site worked well and helped me find a rock that matched what I was looking for. Well within budget and I trust it will show up, so that's definitely positive. Not much else to it. Satisfied.

Posted By Big Ricky in May, 2026
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Overall Rating -> 10 star ratings

Everything was great, website user friendly, quality amazing, communication amazing, delivery amazing, everything was as expected, they done what they said they would, overall experience was amazing.

Posted By Jac in July, 2025
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